index | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
no2 | 20 (Good) | 19 (Good) | 19 (Good) | 24 (Good) | 23 (Good) | 27 (Good) | 9.8 (Good) | 16 (Good) | 16 (Good) | 14 (Good) | 11 (Good) | 11 (Good) | 18 (Good) | 16 (Good) | 27 (Good) | 33 (Good) | 20 (Good) | 21 (Good) | 14 (Good) | 18 (Good) | 15 (Good) | 16 (Good) | 14 (Good) | 12 (Good) |
so2 | 5.3 (Good) | 6.5 (Good) | 6.4 (Good) | 9.1 (Good) | 5.8 (Good) | 3.2 (Good) | 3.2 (Good) | 3 (Good) | 2.9 (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) |
co | 783 (Good) | 817 (Good) | 921 (Good) | 818 (Good) | 990 (Good) | 1 (Good) | 1 (Good) | 439 (Good) | 593 (Good) | 718 (Good) | 1 (Good) | 947 (Good) | 822 (Good) | 554 (Good) | 634 (Good) | 407 (Good) | 442 (Good) | 470 (Good) | 755 (Good) | 926 (Good) | 894 (Good) | 1 (Good) | 894 (Good) | 769 (Good) |
o3 | 28 (Good) | 40 (Good) | 41 (Good) | 22 (Good) | 23 (Good) | 22 (Good) | 19 (Good) | 22 (Good) | 24 (Good) | 38 (Good) | 29 (Good) | 23 (Good) | 34 (Good) | 38 (Good) | 37 (Good) | 47 (Good) | 37 (Good) | 21 (Good) | 22 (Good) | 14 (Good) | 21 (Good) | - (Good) | - (Good) | - (Good) |
pm25 | 39 (Unhealthy for Sensitive Groups) | 51 (Unhealthy for Sensitive Groups) | 45 (Unhealthy for Sensitive Groups) | 40 (Unhealthy for Sensitive Groups) | 46 (Unhealthy for Sensitive Groups) | 32 (Moderate) | 25 (Moderate) | 28 (Moderate) | 26 (Moderate) | 31 (Moderate) | 45 (Unhealthy for Sensitive Groups) | 29 (Moderate) | 30 (Moderate) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) | - (Good) |
IIT
index | 2018-02 | 2018-01 | 2017-12 | 2017-11 | 2017-10 | 2017-09 | 2017-08 | 2017-07 | 2017-06 | 2017-05 | 2017-04 | 2017-03 | 2017-02 | 2017-01 | 2016-12 | 2016-11 | 2016-10 | 2016-09 | 2016-08 | 2016-07 | 2016-06 | 2016-05 | 2016-04 | 2016-03 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
no2 | 20 | 19 | 19 | 24 | 23 | 27 | 9.8 | 16 | 16 | 14 | 11 | 11 | 18 | 16 | 27 | 33 | 20 | 21 | 14 | 18 | 15 | 16 | 14 | 12 |
co | 783 | 817 | 921 | 818 | 990 | 1 | 1 | 439 | 593 | 718 | 1 | 947 | 822 | 554 | 634 | 407 | 442 | 470 | 755 | 926 | 894 | 1 | 894 | 769 |
o3 | 28 | 40 | 41 | 22 | 23 | 22 | 19 | 22 | 24 | 38 | 29 | 23 | 34 | 38 | 37 | 47 | 37 | 21 | 22 | 14 | 21 | - | - | - |
pm25 | 39 | 51 | 45 | 40 | 46 | 32 | 25 | 28 | 26 | 31 | 45 | 29 | 30 | - | - | - | - | - | - | - | - | - | - | - |
so2 | 5.3 | 6.5 | 6.4 | 9.1 | 5.8 | 3.2 | 3.2 | 3 | 2.9 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |